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lead screw

American

[leed] / lid /

noun

(on a lathe) a rotating horizontal screw for moving the tool carriage along the work at a constant rate.

lead screw British

/ liːd /

noun

a threaded rod that drives the tool carriage in a lathe when screw cutting, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Its lead screw, liberated from the child’s spinning top that inspired its designer, still works, sending the basket merrily whirring in its plastic bowl.

From Slate • Jun. 20, 2022

WHY: The incline lead screw can shear off, causing the foot pedals to drop unexpectedly, resulting in a fall hazard to the user.

From Seattle Times • Mar. 30, 2018

Here we have two wheels having each 36 teeth; hence we may place one of them on the lathe spindle and one on the lead screw, as in Fig.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua

Thus, in an inch of the length of the lead screw there are 16 sixteenths, and in this inch there are 4 threads; hence each thread is 4⁄16 pitch, because 16 ÷ 4 = 4.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua

It has also a feed rod for the ordinary tool feeding and a lead screw for screw-cutting purposes.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023